Jackson, meanwhile, posted a picture showing a possible new uniform number (though the NFL has a bizarre rule about receivers not wearing numbers 1-9):

Unfortunately for Jackson, NFL rules won’t permit him to wear No. 1, his college number at Cal, either. NFL wide receivers must wear numbers between 10 through 19 or 80 through 89. Try again, DeSean.

From earlier …

DeSean Jackson’s Twitter handle is @DeSeanJackson10, and he wore jersey No. 10 in each of his six seasons with the Philadelphia Eagles. It doesn’t sound like he’s given up hopes of wearing it again with the Washington Redskins even though it currently belongs to QB Robert Griffin III, who also sported 10 as a Heisman Trophy winner for Baylor.

“I definitely am familiar with the No. 10 on Robert Griffin,” Jackson said Wednesday during a conference call after he officially signed his new three-year, $24 million contract in Washington.

“But, you know, we’ve talked about it a little bit, but there hasn’t been a decision that’s been made yet so far. But maybe by the time season starts we’ll know. But maybe RG3 will wear No. 3 and I’ll try to get in 10. We’ll see how it goes though. Never know.”

No, you never do, but this isn’t at the same level of Eric Decker prying No. 87 away from Jeff Cumberland with the New York Jets for $25,000 and a steak dinner. Plenty of Washington fans proudly wear No. 10 RG3 jerseys, and Griffin would probably have to jump through some apparel hoops with Nike if he even wanted to consider a switch for his new deep threat.

But regardless of the numbers they’re wearing, it seems Griffin and Jackson are glad to be teammates.

“I think he’s done a great job of embracing me and calling me as soon as he knew I was a free agent and saying, ‘I want to do my best to be able to get you here,’ ” Jackson said of RG3.

“I think they respect him enough out here to just hear him out and listen to him and he had a big part of getting me to sign here, so I praise him and DeAngelo Hall to the utmost respect. Those guys stood up for me, and they just embraced me. They knew what my talent was, and they knew what I could help bring to the football team, so that was the end of the decision.”

Griffin seemed equally giddy.

“We are all excited to have him join our team,” said the third-year quarterback. “Our team and this city will be there for him.”